Rusty M&P [Archive] - Glock Talk

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sr975j
02-21-2012, 20:12
So my buddy with a m&p9c left his gun in a lock box under his seat for a week or 2. (yes I told him not to leave it in his car). His car has a small water leak somewhere so it is always "moist" inside for lack of a better word. so he takes his gun out today and its rusty as hell.

So whats the best way to clean it up?

Sam

Outdoor Hub mobile, the outdoor information engine

*ASH*
02-21-2012, 20:27
:needspics:



id love to see it :rofl:

sr975j
02-21-2012, 20:32
Hes already started cleaning it. Hes just going to town with hoppes and a cloth.

Sam
Outdoor Hub mobile, the outdoor information engine

huskerbuttons
02-21-2012, 20:42
If it don't clean up, he can send it back to S&W for refinishing. It has a lifetime warranty and they are good about honoring it. Don't ask how I know, just trust me on it.

ronin.45
02-21-2012, 20:51
That's a pretty common problem with M&Ps around here. The melonite finish isnt nearly as corrosion resistant as one would think. He is already doing the only thing he can, short of sending it in.

Foxtrotx1
02-21-2012, 20:52
Rust is just orange character marks.

cphilip
02-21-2012, 21:02
Did it come from Craftsman?

1-2man
02-21-2012, 21:04
Two out of the four M&Ps I've owned rusted within the first couple months of carrying it. S&W swapped out the slide extremely quickly and at no cost to me.

vart
02-21-2012, 21:33
I leave my M&P in my car every night; no rust in 4 years.

Of course this is AZ with 15% humidity...

*ASH*
02-21-2012, 21:36
Did it come from Craftsman?

:whistling::whistling:

http://i42.photobucket.com/albums/e332/KK_Koala/28jz43p.jpg

sharpshooter
02-21-2012, 21:39
Hey, those are MY pliers! (they really are, I posted that pic here a few years ago).

*ASH*
02-21-2012, 21:49
Hey, those are MY pliers! (they really are, I posted that pic here a few years ago).

:rofl::rofl::rofl::rofl:

i keep everything , muhahahahahhahahahahahaa

Tim151515
02-21-2012, 22:39
Isn't the MP made of stainless? I understand that stainless can rust too, but isn't it generally more resistant? Is the finish they use really that bad that it negates the advantages of the metal they use? (If I am wrong, please correct me, but I could swear I have seen/heard that one of the MPs stregnths was the type of metal the slide was made of)

ronin.45
02-21-2012, 23:33
Stainless used in guns and knives has a fair amount of carbon in it. It will still rust pretty good if allowed to. The ones I've seen have all started rusting around the rear sight. It appears that the sight rusts and then it spreads.

sr975j
02-21-2012, 23:34
well i told him he could send it off to S&W to get it refinished but i think he just plans on using some elbow grease and getting it done himself. what i worry about is the internals. he is scared to detail strip the gun. ive never owned an M&P; how hard are they to detail strip?

Sam

Andy W
02-22-2012, 00:00
well i told him he could send it off to S&W to get it refinished but i think he just plans on using some elbow grease and getting it done himself. what i worry about is the internals. he is scared to detail strip the gun. ive never owned an M&P; how hard are they to detail strip?

Sam

It's a few more steps than a Glock but not terrible. Definitely doable. One thing that will come in handy is a roll pin punch. There should be some videos on you tube that show you how.

Andy W
02-22-2012, 00:02
Hey, those are MY pliers! (they really are, I posted that pic here a few years ago).

Yeah, that was a pretty funny thread wasn't it?

fastbolt
02-22-2012, 13:34
I'd call S&W and see what they have to say. Why not?

There was a time when they supposedly received a batch (or more) of slides that had been treated by their Melonite vendor that exhibited rusting problems. Treating stainless steel with molten salt bath ferritic nitrocarburizing requires a certain variation of the process in order not to compromise the inherent corrosion resistance properties of the stainless alloy. It's the QP (Quench/Polish) version, instead of the QPQ version, as I recall. Also, the heat used in the process must be maintained within a specific temperature range, as well.

S&W was replacing some slides for their customers if they received one which exhibited unexpected rusting (even when carefully and properly cared for). Why not see if they'll look at this one?

FWIW, both of my own M&P's ('08 & '09 production) have been exposed to nasty rain (including pouring water out of magazines during rainy shooting sessions, after loading them with ammo from a rain-sodden pocket while standing in the heavy rain), and I store one of them inside a leather holster in my safe.

I wipe them off after wet range sessions, and I've even field-stripped and cleaned them after exposure to really heavy rain (but not always, if I'm not going to be carrying them before use at another range session soon :whistling: ). I've not had any sign of any sort of oxidation on either (or on the magazines).

Mine must've received the intended Melonite treatment under optimal conditions, I guess. :)

Bodyarmorguy
02-22-2012, 13:41
:needspics:


What he said

SpectreRider
02-22-2012, 14:39
he is scared to detail strip the gun. ive never owned an M&P; how hard are they to detail strip?

Sam


Tell me again, Who let their gun get rusty? :whistling:


:tongueout:


:rofl::rofl::rofl:

nastytrigger
02-22-2012, 15:15
I'm bad about handling my guns and not wiping them down. My Springfield Loaded Parkerized is the one that'll rust within a week if I don't wipe it down. Worse, if it's hot or wet.

The only thing on my Glock 19 that rusts is my Heinie rear sight. I carry the G19 the most. I try to wipe it down often, but it goes away quick, and I tend to rest my sweaty left hand on my gun when standing too. Bad habit I have.

Same with my snubby revolver. No rust issues, but I tend to put my hand in my pocket and fondle the shrouded hammer's serrations.

All in all, not relying on fancy finishes and wiping down any gun with oil is a good thing. I've even started to wear gloves when working with my guns cleaning/maintenance.

fiasconva
02-22-2012, 15:30
Well, you can't fix stupid but he's gonna have to give it a try.

Bren
02-22-2012, 15:33
My M&P .45 rusted a little on the slide stop lever when I first got it. It hasn't rusted any more since I used breakfree on it - none of my guns rust in my damp basement, as long as I clean with breakfree. I'd be surprised to see an M&P rust a lot, since the frame is plastic and the slide is stainless steel with a coating on top of that. The hammer and levers and such can rust.

FCastle88
02-22-2012, 16:01
I'd call S&W and see what they have to say. Why not?

There was a time when they supposedly received a batch (or more) of slides that had been treated by their Melonite vendor that exhibited rusting problems. Treating stainless steel with molten salt bath ferritic nitrocarburizing requires a certain variation of the process in order not to compromise the inherent corrosion resistance properties of the stainless alloy. It's the QP (Quench/Polish) version, instead of the QPQ version, as I recall. Also, the heat used in the process must be maintained within a specific temperature range, as well.

S&W was replacing some slides for their customers if they received one which exhibited unexpected rusting (even when carefully and properly cared for). Why not see if they'll look at this one?

This is the problem, though it's been a lot more than one batch, it's been an ongoing problem for years. Guess S&W figures it's cheaper to replace some slides than to do anything about it. Properly done, a melonite treated stainless slide should be just as rust-resistant as a Glock, if not more so. However, when the melonite is done improperly, it actually makes the stainless steel rust more easily than untreated steel.

fastbolt
02-22-2012, 17:08
This is the problem, though it's been a lot more than one batch, it's been an ongoing problem for years. Guess S&W figures it's cheaper to replace some slides than to do anything about it. Properly done, a melonite treated stainless slide should be just as rust-resistant as a Glock, if not more so. However, when the melonite is done improperly, it actually makes the stainless steel rust more easily than untreated steel.

From what I've heard in recent years, they're trying to stay on top of their vendor.

I suspect they feel it's easier for their customers to just replace affected slides than to send the same slides off for more batch treatments, even if it's not particularly "less expensive" for them as a company. I imagine there's a process for them to get satisfaction from their vendor for such problem pieces.

Also, it's not like it's all that difficult to find large companies who offer this process. It's probably somewhat competitive, with poor QC resulting in potential loss of future business from large customer companies like S&W ;)

As with anything else being procured from vendors, though, sometimes a production QC issue might not surface until after a product has made it to the customer, though (some instances of spring problems come to mind).